Firebase Authentication JavaScript get success

Question

With the following Firebase email authentication code, how do you know whether authentication was successful?

firebase.auth().signInWithEmailAndPassword(emai         


        

Answer 1

If nothing was cached then it was successful.

var isSuccessful = true
firebase.auth().signInWithEmailAndPassword(email, password).catch(function(error) {
        // Handle Errors here.
        var isSuccessful = false
        var errorCode = error.code;
        var errorMessage = error.message;

        if (errorCode === 'auth/wrong-password') {
          alert('Wrong password.');
        } else {
          alert(errorMessage);         
        }

        console.log(error);
    })
    finally {
     if(isSuccessful)
         //Success!
    }